[Rails5] `spec/lib/gitlab/sql/glob_spec.rb` fails

Note: add rails5 to a branch name to trigger rails5 specific CI jobs.

https://gitlab.com/gitlab-org/gitlab-ce/-/jobs/72478375

  2) Gitlab::SQL::Glob.to_like matches * as %
     Failure/Error: expect(glob('apple', '*')).to be(true)

       expected true
            got false
     # ./spec/lib/gitlab/sql/glob_spec.rb:6:in `block (3 levels) in <top (required)>'

  3) Gitlab::SQL::Glob.to_like matches % literally
     Failure/Error: expect(glob('100%', '100%')).to be(true)

       expected true
            got false
     # ./spec/lib/gitlab/sql/glob_spec.rb:18:in `block (3 levels) in <top (required)>'

  4) Gitlab::SQL::Glob.to_like matches _ literally
     Failure/Error: expect(glob('^_^', '^_^')).to be(true)

       expected true
            got false
     # ./spec/lib/gitlab/sql/glob_spec.rb:24:in `block (3 levels) in <top (required)>'